Furl with the sail on the starboard side, have the boom at the correct angle and keep a bit of tension on the outhaul. Winter storage of mainsail for selden in mast furling i drop mine every year and give them to the local sail loft to be cleaned and repaired. We look at each type of main reefing systems, describe the mainsail reefing equipment, describe reefing techniques, and mainsail reefing tips. We replaced the inmast rig with new masts from selden using their mds batten car system which consists of a set of wheeled cars running up and down in the. Jan 25, 2011 by necessity, sail battens in a furling main must be parallel to the mast rather than the boom, as is the case for the slab reefing sail. After our first extended trip, we have 2 places where the sail cloth is worn thru and one 2 inch tear both at the foot of the sail at our reef points in the vertical direction. The multitude of different systems requires detailed knowledge to achieve a perfect fit, and the unique way in which the sail is carried in the mast demands specialized shaping that is optimized to each extrusion type. This investment substantially increases the lifespan of the sails. All neil pryde furling mainsails are equipped with a safety clew ring that can be used in the unlikely chance of clew block failure. The sail grows deeper and also over time, develops large creases out of the head and also out of the clew. You would think a book entitled sail trim might actually have more than a few pages on that topic. Normal options to include are clew block, clew uv cover, reefing marks and sail bag. Because the sails have to fit inside the spars, the choice of fabric is limited. Adjusting sail draft boat handling sail cruising tips knowledge.
In sailing the boats we can offer these general ideas and observations that will apply to the 311s through to the newest. Sail type this is the simplest in mast furling mainsail. Its also a fact that getting a big sail to roll up into a small space can require compromises in both sail shape and roach profile. The lesson of the trim loop was that bending the mast changes more than just the.
When trimming your headsail, heres what you need to know. Our prior boat was an h340 and the mast was about 52, our new boat is a h41 deck salon which has a mast height of 63 and has a displacement of about 20,000 lbs. Now youre cranking and cranking and all of a sudden it becomes very hard to pull in more furling line but the head sail is still a little bit out and needs a couple of more wraps. When the boom is close to the centreline, the mainsheet is the. The truth about inmast furling mainsails quantum sails. By nature, a mainsail is the most durable and flexible sail in any inventory.
Hello, i am looking to buy a bit bigger boat this year and a lot of the potential choices that i have looked at have roller furling mainsails. Sails that stow in the boom rather than in the mast allow you to have a decent amount of roach, but they are not without their issues either. In mast furling systems are a fairly new concept but are becoming increasingly popular as mast manufacturers and sailmakers get a better understanding of the interaction between the two components. Im ready to step the mast with everything attached to it. In contrast to slab reefing, the furlboom system flattens the sail as it is reefed, further depowering the sail. Don, on may 21st, im racing a beneteau 343 from long beach to two harbors, catalina. The selden furling mast roller mechanism design is based on furlex foresail roller ree. Again, you need is to understand how each control line works and what youre trying to accomplish. What i suspect is happening is the common failing of in mast setups. In mast furling mains the good, bad and ugly cruising.
The mainsail manual primarily focuses on bermuda mains the triangular sails that are most common on modern sailboats as mainsails and mizzen sails. Basic trim is achieved by simply easing the sail until it luffs, and. The clew back corner of the sail attaches to the free end of the boom. I have heard of some go fast sailors who have a conventional track attached to the mast to the side of the furling slot and use a conventional main when racing and then use the furling main when they are just out for a cruising sail.
Upwind in up to about 8 knots true wind the traveler can be brought to weather of centerline. This article compares the various methods of reefing the main sail, specifically mainsail reefing systems. It is unfurled by an outhaul line and furled back in with a line labelled as the inhaul. She has a threestateroom cherry interior, satin panels and gloss trim. For instance, with the freefooted main, it seems that i now have to control draft depth with the. Second, the mainsheet controls the angle of attack the sails angle to the wind. Newer or laminate sails generally need less halyard tension than older dacron and rollerfurling sails.
Complete supernova kayak sail, roller furling, mast, and. Top tips on sailing well with an in mast furling mainsail and how to tune your rig for best performance. The crucial concept of compact f is the fixing of the housing sections to the mast sailtrack without the need to drill holes in the mast. Masts, booms, furling, rigging and mainsail products.
Mainsail furling, like this inmast system, allows smaller crews to handle large sails. Modern reefing furling units make use of a continuous support tape along the leading edge of the sail that slides into a groove in the furler. September 12, 2016 tuning guide pdf corporate profile. Modern folk artist sparxseas new music video featuring sailor holly martin.
Inside the mast is a grooved aluminum extrusion into which the luff of the mainsail slides, in much the same way as a furling genoa. The difference is that there is not a lot of room inside the mast for a rolled sail, and most issues are caused by the sail not furling properly so that the furl becomes too bulky. To unpack a bag, i untie it, flick the rig vertical, and pull the bag down. Although more popular than ever, a furling mainsail is still not 100% standard equipment on todays boats. The additional challenge is building a sail that can easily pass in and out of the mast. Sep 30, 2009 got a brand new bene 40 this summer with the standard in mast furling mainsail. Top tips on sailing well with an inmast furling mainsail and how to tune. Quantums jeff thorpe and dave flynn get into the details about the available options and what you need to know. The essential challenge of mast furling mainsails is to create a sail that has enough shape to be aerodynamically efficient, but is also flat enough to furl effectively into the mast chamber. In part 4 of our 12part series professional sailing coach pip hare. If the foot is not attached to the boom, the rig is known.
Making the strongest run in the oem market, in mast furlers, are found on more new production boats than conventional masts these days. The bit that helped me the most was the theory of the vang. Sail trim chart for in mast furling sailboat owners forums. Sail trim expert and prizewinning racing sailor, karlotto book of elvstr. I am a bit concerned already that moving from my first 285 to an oceanis series will compromise some of the fun factor but with the roller furling main, i worry about losing not just boat speed but the ability to trim the sail effectively. Only three things matter with sail trim boat speed, boat speed and boat speed. Dec 20, 2012 if the sail is furled or unfurled while powered up, problems are more likely to develop. Inmast main to slabreefing conversion jeanneau owners forum. Sailnet community winter storage of mainsail for selden. Does anyone know of a good guide book or online for getting the best out of in mast furling sails. Inmast furlers offer the user a relatively short list of benefits. Due to the foot of the sail being a lot shorter than the luff, a vertically furling mainsail has less sail to furl. Ensuring that these sails are designed properly is the key to a good replacement sail for your hunter 36. With these systems, there is a mandrel in the boom that the sail rolls around, and the challenge inevitably becomes keeping the sail from traveling either forward or backward along the mandrel and bunching up.
Although these sails are more expensive due to the full length battens and heavier material, they offer better performance in regards to power and sail shape. With slugs slides in the mast folding the sails on a small boat, say under about 3335 feet is not too hard, and if you are in good shape its no big deal to flake a sail by yourself but as boats get larger, or people are less physically able, it gets harder to flake a. Please no debates about the pros and cons of in mast furling. Hoist the mainsail slowly and carefully assuring the bolt rope is guided into the furling rod. This means that it takes more turns to furl to sail. In mast furling usually necessitates an unbattened mainsail. The facnor mainsail furling system makes your sailing safe and comfortable. When reefing the mainsail, you are reducing the size of the sail area presented to the wind. Ours is electric with a manual backup, well roll the sail in and out 34 times a day as the breeze comes and goes. We also tried furling the sail in, but the jam works both ways. It is an excellent visual reference for what is happening aboard a sailboat when various trimming devices are used, and how they are to be used. Beneteau tuning guides neil pryde international sails. Her naca profile centreboard gives her excellent windward sailing ability, together with the capacity to sail.
The chemical composition of the yarns is all the same except for the differences in size of yarn, the way. The sail is laced to the mast and can be dropped into the step, a sheet reeved, and off you go. Inmast furling mainsails your inmast furling mainsail will be designed and constructed to be as durable and maintainable as possible within the constraints of the furler manufacturers sailmaking instructions. In boom furling despite their performance potential, in boom furling systems have long been suspect in the eyes of many sailors because of their complexity and reputation for binding. Mast and boom in place, attach the head of the sail to the lower swivel shackle. Furling sections 2 meters long they fitt inside the housing sections. First of all, when the sail is fully rolled out, there is no real way to trim. The intricacies of good sail and boat trim fill many books, so this. Patch styles include reefing buffer patches at head and tack that help to disperse sail loads when reefed. Mainsail trim pointers, reefing and sail care for the beneteau oceanis series the following points on mainsail trim apply both to the furling and classic mainsails we produce for beneteau usa and the oceanis line of boats.
The multitude of different systems requires detailed knowledge to achieve a perfect fit, and the unique way in which the sail is carried in the mast. This boat has an in mast furling main, no battens, and no backstay adjustment. The mainsheet is the most important single sail trim control on the boat. In mast furlers offer the user a relatively short list of benefits. Unlike a traditional mainsail that is hoisted and doused vertically with a halyard, an inmast furling mainsail wraps around a tube inside a hollow mast. Furling a head sail in high winds sailing blog by nauticed. One of the big appeals to in mast furling is that at the end of a sail you do not have a sail to flake fold on the boom. It is possible to furl into all furling masts, also the ones with a narrow opening. Includes mast head bottom furling extrusion selden in mast furler winch mast step spreader roots x2 goosenecks x2 shivbox halyard exits. It tends to be very tricky if your main mast has battens.
The difference is that there is not a lot of room inside the mast for a rolled sail, and most issues are caused by the sail not furling properly so that the furl. Inmast furling is much like using your jib furler in that you pull the inhaul furling line to wrap the sail around itself, although the mainsail gets wrapped inside the mast. Turns that you dont have stored in the furling drum. My sprit rigs live in long, loose, and slippery bags of light fabric. This keeps the furled sail compact and prevents loose sail material from jamming in the mast cavity. Directions for keeping your mainsail furling unit working smoothly and. There are two methods of reefing or furling a mainsail. Book description the bestillustrated manual ever on tuning the sails and rigs. Profurl mainsail in boom furler gear anarchy sailing. Trim the main so the boom is on, or near, the centerline.
Taming the mainsail ocean navigator januaryfebruary 20. You can find more information in the rya sailtrim handbook for cruisers by rob gibson. When converting a sail to roller furling, the existing luff tape, any wire or rope, and all hanks, grommets, and thimbles must be removed. With 44 articles that have never before appeared in book form, the new book of sail trim provides concise, easytounderstand instruction in every facet of sails and sail handling. The selden sailtrim book has a bit, but mostly about getting a neat furl. The area aft of the mast must be free from halyards etc. The partialbatten mainsail a mc 6500 carbontechnora blend sail with partial epoxy battens.
If youre trimming a racing mainsail, dont raise the head of the sail over the black band at the top of the mast that delineates maximum legal hoist. With your jib, when its time to use the sail, you release the furling line and unwrap the sail by pulling on the jib sheets. The gooseneck pivots allowing the other end of the boom to move freely. It should be placed at a distance of 455 mm to 499 mm measured from the centreboard screw to the centre. Lubricate the jib furling systeminmast furling ball bearings. Do check in the mast before you start, toggles and spreaders must be in good shape. Cruising sail trim priorities will vary depending on the wind strength.
With a bendy mast you can open up the leach by using the vang on the upwind legs too. If the mainsail is typically furled into the mast, you will be furling the sail into the mast a little to reef it. In this section we will deal with the in mast systems. Such sails evolved into the square sail rig that persisted up to the 19th century. Too much mainsail for the wind conditions can be dangerous. In the last edition of the fast course book, this chapter included an extensive trim. Mainsail trim pointers neil pryde international sails.
The jib lead balances high and low shape in the sail. In testing, this sail responds well to all normal trim inputs. Hi guys, its my unpleasant duty to attempt to repair a mainsail furler. When it comes to mainsail furling systems, there are two options. From the pages of sail magazine, comes the first new anthology in nearly 15 years on the popular subject of sail trim. Sail triming with inmast furling sailboat owners forums. That may seem a little extreme but allows the yacht to be used in both applications. If more luff tension is needed, use the cunningham to pull down and remove horizontal wrinkles. Ive used it for downwind legs to hold the boom down but not for upwind.
Instead, you get 20 pages on poorly simplified and misrepresented fluid dynamics granted, i was an aerospace engineer in college, 30 pages on different kinds of boats, 15 pages about a new automated sail trim on some crazy german boat, and 2 pages that with no real explanation dictate. This ensures that the boom will be close centerline and the leech of. Youll sail a lot more with the in mast furling main, as opposed to conventional hoistfully battened, especially as the boat gets bigger. Stretchy, poorlydesigned sails that bunch up and jam as you try to furl or unfurl can quickly negate the beauty of the system. One complaint about mast furlers is the reduced sail area from the leech hollow. I have sailed many yachts with mail sail in mast furling systems, and i have never been so unsatisfied with these kind of sails as with all other types i sailed with. Guillette\u000b\u000bi am a customer and a fan of your sail trimming guide. This book does a really great job of explaining how sails work and the importance and basic goals of sail trim and proper sail shape. Much like mainsails, proper sail trim isnt difficult. To furl well inside the limited space of the mast cavity, the sail s shape must also be quite flat.
You also loose the fully battened sail, so the sail shape is never as good and the performance of the mainsail is more like a jib or genoa than a main sail. Get the inside scoop on the the best options and for systems and sails. Furling the mainsail after all of the conveniences that technology has afforded us sailors, there is still one luxury that has eluded us. I have no experience with vertically battened sails, so take my observationjudgement with that in mind. When it comes to dousing a mainsail after a day on the water a mast furling mainsail is a joy. Cost effective and solid are the most important features. Her naca profile centreboard gives her excellent windward sailing ability, together with the capacity to sail in shallow water. The depth of draft is adjusted by mast bend and clew outhaul. Furl and unfurl the sail a couple of times to ensure that the system works as it should, and to familiarise yourself with its operation, and also to check that the sail is correct size. In this manner we got more and more of the sail out but the leech is still jammed about seven or eight meters up the mast. Also, the boom weight is significantly reduced when compared to that of a conventional or inboom furling unit. The ins and outs of inmast furling mainsails modern sailing. Dependable in all weather and sea conditions, the sail can be hoisted, reefed and furled by one person from the safety of the cockpit. Posted on december 26, 2016 march 11, 2018 by the rigging company, llp when it comes to mainsail management systems, in mast furlers appear to be losing popularity with cruisers while boom furlers keep popping up on more boats.
For additional information, turn to the extensive appendices concerning lateen, gaff and spirit rigged sails. When furling the sail away, these creases bunch slightly and override on the rolling sail. She is cutterrigged, with a hydraulic furling in mast mainsail, a hydraulic furling jib, and a manual furling staysail. According to jett, the egyptians used a bipod mast to support a sail that allowed a reed craft to travel upriver with a following wind, as late as 3,500 bce. This will fit the sail mast on hobie mirage kayaks without modification. Selden inmast furling rig parts used boat equipment. Advanced inboom mainsail reefing system pompanette, llc.
Technical product brief inmast battened furling mainsail. Aug 02, 2017 so if you plan to do any kind of racing or require a boat that sails well on all points of sail, in mast furling might not be for you. Sailing has contributed to many great explorations in the world. Sailnet community winter storage of mainsail for selden in. Adjust the halyard tension for a slight fold in the sail along the furling rod. This is a profurl type where the mainsail rolls into the boom, and is hoisted into a set of furler extrusions, which are mounted on brackets about 5 off the back face of the mast.
Dec 25, 2016 mainsail reefing is an important part of mainsail trim. In mast furling mainsail when you have to cut a sail to be able to roll into a mast, the leech has to be cut concave, so you loose a lot of sail area. Sail trim expert and prizewinning racing sailor, karlotto book of. In mast tension required in mast furling systems need a small amount of tension on the outhaul as the main is rolled into the spar. The unique design of the halyard swivel bearing distributes the load over the whole ballrace to give smoother furling and the lowest. The air batten from halsey is an inflatable batten which is inflated when the sail is set, giving you much more sail area. The forward end of the boom attaches to a mast just below the sail, with a joint called the gooseneck. The ins and outs of inmast furling sailing florida charters. Sail number, trim stripes and other options are also available.
Simply cut in back of any grommets in the sail along the inner edge. Hello, i need to replace the in mast furling rope of my oc 351, it has a z spar in mast furling system, has anyone had the experience of changing the ropes on this type of furling system. Precision sails offers very well designed in mast furling mainsails. Control of sail shape via mast bend is not possible. Mast furling mainsail to function correctly, mast furling mainsails must work efficiently within the mast cavity and opening. However, i can only see how vertical battens would make in mast furling more problematic, and require a larger diameter mast to account for the battens. If the mainsail is hoisted, then to reef, you will be lowering the sail slightly. Although full length vertical battens could support a roach similar to that of the standard mainsail, practical issues preclude such awkward stuff on an ocean cruising vessel, imagine a raisinglowering. The great reliability of the system comes from the furling mechanism itself which is a unique line drive positioned just above the gooseneck facnor patent.
Nijinsky is a conventional transom, aft cockpit hinckley souwester 52. In mast furling mainsails are a popular feature on new cruisers for convenience. Now that i own a 410, with in mast furling, im having to learn a new way to sail and trim. If nothing else, this more robust sail will last much longer when compared to conventional or in mast furling sails. May 27, 2016 in mast furling mainsails are popular on many cruising boats, and the conveniences are hard to beat. On a large sail this sort of system can introduce quite a lot of friction, especially if theres any wind in the sail, so an inmast furling system would probably have been easier to use. I think this is the first time that i have read any specific information on sail trim for in mast furling. The first part of the book describes stepping masts and preparations in general.
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